Sash-lock.



ERNEST C. TALIAFERRO, OF SPRINGFIELD, MASSAGHUSETTS.

SASH-LOCK.

Specification of Letters Patent.

Patented res. e2, 1916.

emo es is ue 14, 1915. Serial in). 45,513,

To all whom it may concern:

Be it known that I, ERNEST C. TALTA- FERRO, a citizen of the United States of America, and a resident of Springfield, in the county of Hampden and State of Massachusetts, have invented'certain new and useful Improvements in Sasl1-Locks, of which the following is a full, clear, and exact description.

This invention relates to improvements in devices for locking the meeting rails of sashes of a kind comprising a frame to be mortised into the lower portion of the upper sash, having a bar pivoted therein, which bar is provided with a forwardly projecting extension to be thrown out across the upper edge of the lower sash and when in its locking position to prevent the upper sash from being lowered and the lower sash from being raised.

The present device of the general description above stated is improved in respect to the provision of a plate slidable in the front of the frame and operable to hold the locking member withdrawn or retracted in the frame, and when raised to permit the locking member to have its projected sash looking position; and the device is further improved by the provision of means whereby after the plate shall have been raised sufficiently to permit the projection of the locking member, the plate may then detachably engage the locking member for preventing the latter being moved to its retracted and releasing position.

The device is further constructed to the end of simplicity, inexpensiveness and general desirability and acceptability in the trade.

The invention is described in conjunction with the accompanying drawings and is set forth in the claim.

In the drawings :Figure 1 shows the meeting sash rails of a closed window and the locking device in the upper sash having its retracted sash releasing position. Fig. 2 is a similar view but showing the locking device as having been operated so that the locking member is in the sash locking position. Fig. 3 is a cross sectional View on line 33, Fig. 2. r

In the drawings, A represents the upper sash and B the lower sash; C represents the frame advantageously made in the form of a rectangular box or casing having an open front and adapted to be set and secured in a mortise in the sash A.

The locking device consists of a bar, D, which, at its upper end by the horizontal pivot a is hung in the casing to swing in a vertical plane; and such bar, at its lower end has a forwardly projecting locking extension E.

Z) represents a spring. applied in compression between the lower end portion of the bar D and the rear wall of the box-like casing for exerting a forwardly forcing action on the locking member. G represents a plate having vertical opposite edged tongues or flanges to engage in grooves (Z d within the inner opposite side walls of the frame. The slidable front plate G has thumb cuts f therein for facilitating the sliding movements thereof. The locking member D, E, having been forced inwardly to the position shown in Fig. 1, is held in such position by the lowering to closed position of the plate (It. Upon the sliding of the plate upwardly a short distance, the locking member is permitted to be automatically swung, under the stress of the spring 7), to the sash engaging position shown in Figs. 2 and 3.

The abutment block J having a downwardly and outwardly beveled top is ad vantageously used on the lower sash as indicated in the drawings.

The locking member is provided with an upwardly open socket g at the junction of the forward face of the bar D and the upper face of the extension, E, such socket being formed with opposite parallel substantially vertical walls. After the plate D shall have been slid up sufficiently for the projection of the portion E across the lower sash. the plate may be then slid downwardly to a slightextent to have the lower edge thereof engage in the aforesaid socket g, preventing, except as purposely done from the inside of the room, the unlocking and retraction to the releasing position of the locking member, D, E.

In a window lock, a box-like casing, made with an open front, a bar pivoted at its upper end portion in said casing to swing in a vertical plane, having a forwardly projecting locking extension, and provided with an upwardly open socket at the junction of the forward face of the bar and the upper face of the extension, which socket CID pleasure, when lowered to confine the lock- 10 mg bar and its extension entirely Within the box-like casing.

Signed by me at presence of a Witness.

ERNEST C. TALIAFERRO.

Nitness G. R. DRISCOLL.

Springfield, Mass, in

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

